107 
PHYSICAL AND MATHEMATICAL SECTION. 
February 1st, 1866. 
E. W. Binney, F.R.S., P'.G.S., President of the Section, 
in the Chair. 
The following “ Results of Rain-gauge and Anemometer 
Observations made at Eccles, near Manchester, during 
the year 1865,” were communicated by Mr. Thomas 
Mackereth, F.R.A.S., M.B.M.S.: — 
During the past year I have been able to register the rain- 
fall at Eccles, from four different gauges ; two I have placed 
three feet above the ground, thirty-four feet from any dwelling- 
house, and fourteen feet from my astronomical observatory, 
which stands ten feet higher than the receivers of these 
gauges. This ten feet measures to the apex of the revolving 
roof of the equatorial room. The receivers of the rain gauges 
on the ground are of different shapes, one being round, lOin. 
diameter, the other 5in. square. The other two gauges are 
placed fouWeet above the ridge of my house, quite above the 
chimneys and free from the influence of any erections what- 
ever. One of the gauges is 5in. square, like the 5in. 
one that is three feet above the ground, on Glaisher’s plan, 
with an edge inclined inwards, as is usual with rain gauges. 
The other is also 5in. square, but with an edge inclined 
.outwards. These gauges are thirty-two feet from the ground. 
The water falls into glass vessels, into which the receivers 
are made to fit, exactly like the 5in. gauge three feet from 
the ground, so that there is no tube required for it to flow 
through and thus to cause loss by evaporation. Below I 
